Borcus the Revenant Monk (Kensei)

Regeneration. The revenant regains 10 Hit Points at the start of each of its turns. If the revenant takes Fire or Radiant damage, this trait doesn’t function at the start of its next turn. Its body is destroyed only if it starts its turn with 0 Hit Points and doesn’t regenerate.

Undead Restoration. If the revenant dies, it revives 24 hours later in a different body unless Dispel Evil and Good is cast on its corpse. If it revives, it animates a Humanoid corpse elsewhere on the same plane of existence; it now looks different but uses the same stat block and returns with all its Hit Points.

Last Stand. When you would be reduced to 0 HP, you can drop to 1 HP instead and regain a number of HP equal to half your max HP. Once you use this benefit, you can’t use it again until you finish a Long Rest.

Overwhelming Strike. When you Crit on the d20 for an attack roll, you can deal extra damage to the target equal to the ability score increased by this feat. The extra damage’s type is the same as the attack’s type.

Focus Points (Special). You can expend Focus Points to enhance or fuel certain Monk features. You have 18 Focus Points and regain all expended points after you finish a Short or Long Rest.

Relentless Avenger. When you hit a creature, you can reduce its Speed to 0 until the end of the current turn. 

Multiattack. Borcus uses Vengeful Glare and makes two attacks.

Unarmed Strike. Melee Attack Roll: +14, reach 5 ft. Hit: 19 (2d10 + 8) Bludgeoning damage.

Holy Avenger Twinblade. Melee Attack Roll: +17, reach 5 ft. Hit: 19 (2d10 + 8) Slashing damage plus 11 (2d10) Radiant damage.

Wrathful Greatsword. Melee Attack Roll: +14, reach 5 ft. Hit: 15 (2d6 + 8) Slashing damage plus 28 (8d6) Necrotic damage.

Vengeful Glare. Wisdom Saving Throw: DC 18, one creature the revenant can see within 30 feet. Failure: The target has the Frightened condition and repeats the save at the end of each of its turns, ending the effect on itself on a success. After 1 minute, it succeeds automatically. If the Frightened target is cursed by the revenant (see Vow of Revenge), the target also has the Paralyzed condition for the duration.

Spellcasting. The dragon casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell attack +10, save DC 19):

Vow of Revenge (1/Day). The revenant curses one creature it can see within 30 feet of itself. The revenant knows the distance to and direction of the cursed target, even if it is on a different plane of existence. The curse ends on the target if the revenant uses this Bonus Action on a different creature.

Fury of Blows. You can expend 1 Focus Point to make 3 Unarmed Strikes as a Bonus Action.

Focused Step of the Wind. You can expend 1 Focus Point to take both the Disengage and Dash actions as a Bonus Action, and your jump distance is doubled for the turn. you can choose a willing creature within 5 ft. that is Large or smaller. You move the creature with you until the end of your turn without provoking Opportunity Attacks.

Lay On Hands. You have a pool of healing power that replenishes when you finish a Long Rest. With that pool, you can restore a total of 55 HP. You can also expend 5 HP from the pool of healing to remove the Poisoned condition from the creature; those points don’t also restore HP to the creature.

Recover Vitality.You have a pool of 10d10, you can expend dice from the pool, roll those dice, and regain a number of HP equal to the roll’s total. You regain all the expended dice when you finish a Long Rest.

Borcus can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The dragon regains spent legendary actions at the start of its turn.

Improve Fate. When you or another creature within 60 ft. of you succeeds on or fails a D20 Test, you can roll 2d4 and apply the total rolled as a bonus or penalty to the d20 roll. Once you use this benefit, you can’t use it again until you roll Initiative or finish a Short or Long Rest.

Deflect/Redirect Attack. Borcus can reuse these Reactions.

Attack. Borcus can make 1 attack or spell